From d219e2e86a407035303b987e4184ca0b1de53257 Mon Sep 17 00:00:00 2001 From: David Daney Date: Thu, 19 Apr 2012 14:59:56 -0700 Subject: extable: Skip sorting if sorted at build time. If the build program sortextable has already sorted the exception table, don't sort it again. Signed-off-by: David Daney Link: http://lkml.kernel.org/r/1334872799-14589-3-git-send-email-ddaney.cavm@gmail.com Signed-off-by: H. Peter Anvin --- kernel/extable.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'kernel/extable.c') diff --git a/kernel/extable.c b/kernel/extable.c index 5339705b8241..fe35a634bf76 100644 --- a/kernel/extable.c +++ b/kernel/extable.c @@ -35,10 +35,16 @@ DEFINE_MUTEX(text_mutex); extern struct exception_table_entry __start___ex_table[]; extern struct exception_table_entry __stop___ex_table[]; +/* Cleared by build time tools if the table is already sorted. */ +u32 __initdata main_extable_sort_needed = 1; + /* Sort the kernel's built-in exception table */ void __init sort_main_extable(void) { - sort_extable(__start___ex_table, __stop___ex_table); + if (main_extable_sort_needed) + sort_extable(__start___ex_table, __stop___ex_table); + else + pr_notice("__ex_table already sorted, skipping sort\n"); } /* Given an address, look for it in the exception tables. */ -- cgit v1.2.3